I recently downloaded FF 25.0 on a new computer (Samsung Series 9) and web pages don't render correctly though I used default settings and have same extensions (all in one sidebar and list it). I asked our tech person and he said "Your CSS isn't loading. Try clearing your cache and restarting your browser". This worked but now I find I have to repeatedly do it as many as a few times a day, with varied websites, and once it happens, all websites won't render correctly. I don't want to have to switch to chrome, please help! Here is a screenshot.

I recently downloaded FF 25.0 on a new computer (Samsung Series 9) and web pages don't render correctly though I used default settings and have same extensions (all in one sidebar and list it). I asked our tech person and he said "Your CSS isn't loading. Try clearing your cache and restarting your browser". This worked but now I find I have to repeatedly do it as many as a few times a day, with varied websites, and once it happens, all websites won't render correctly. I don't want to have to switch to chrome, please help! Here is a screenshot.
http://www.screencast.com/t/5GYJ7GE9Ed

It is a problem with a Samsung program that messes with Firefox's cache..
SEE: support.mozilla.org/questions/962429
You need to remove the Samsung Support Center from the Windows control panel, then clear cache and cookies in firefox.
* Ctrl+Shift+Delete will bring a menu, check cache and cookies (and anything else you wanna delete).